No eating Chapati will not lead to constipation.But what you do put into making your Chapati does.Wheat flour which is used in making Chapatis contains dietary fibers and this helps to prevent constipation as it effectively makes the bowels move perfectly. Instead of using just pure wheat flour, you can use multi grain flours to provide a higher fiber levels and this will be more effective to prevent constipation. Also, the use of onions, various herbs like mint, coriander, methi, sesame seeds, and ajwain will make it not only more nourishing but also provide your stomach with more bulk that instigates better bowel movement.